change the way radius is set
change the way radius is set

NicolasSchnitzler/medInria-public,aabadie/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public